<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class AdminUserIdentity extends CUserIdentity
{
    /**
     * user id
     * @var string
     */
    protected $_id;
    
    /**
     * get user id
     * @return string 
     */
    public function getId() 
    {
        return $this->_id;
    }
    
    public function setId($id)
    {
        if(isset($id{0}))
            $this->_id = $id;
        else
            throw new CException('The ID cann\'t be empty');
    }
    
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
        $adminUser = AdminUser::model()->findByAttributes(array('username'=>$this->username));
        
        if( ! ($adminUser instanceof AdminUser))
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		elseif($adminUser->password !== AdminUser::encryptPassword ($this->password))
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
		else
        {
			$this->errorCode=self::ERROR_NONE;
            $this->setId($adminUser->getId());
        }
        
		return !$this->errorCode;
	}
}